/* ———————————————————————–
sysv.h - Copyright (c) 2003 Jakub Jelinek <jakub@redhat.com>
Copyright (c) 2008 Red Hat, Inc.
PowerPC64 Assembly glue.
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
``Software''), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be included
in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.
----------------------------------------------------------------------- */
define LIBFFI_ASM include <fficonfig.h> include <ffi.h>
.machine altivec
ifdef POWERPC64
.hidden ffi_call_LINUX64 .globl ffi_call_LINUX64 .text .cfi_startproc
# if _CALL_ELF == 2 ffi_call_LINUX64: # ifndef __PCREL__
addis %r2, %r12, .TOC.-ffi_call_LINUX64@ha addi %r2, %r2, .TOC.-ffi_call_LINUX64@l
# endif
.localentry ffi_call_LINUX64, . - ffi_call_LINUX64
# else
.section ".opd","aw" .align 3
ffi_call_LINUX64: # ifdef _CALL_LINUX
.quad .L.ffi_call_LINUX64,.TOC.@tocbase,0 .type ffi_call_LINUX64,@function .text
.L.ffi_call_LINUX64: # else
.hidden .ffi_call_LINUX64 .globl .ffi_call_LINUX64 .quad .ffi_call_LINUX64,.TOC.@tocbase,0 .size ffi_call_LINUX64,24 .type .ffi_call_LINUX64,@function .text
.ffi_call_LINUX64: # endif # endif
mflr %r0 std %r28, -32(%r1) std %r29, -24(%r1) std %r30, -16(%r1) std %r31, -8(%r1) std %r7, 8(%r1) /* closure, saved in cr field. */ std %r0, 16(%r1) mr %r28, %r1 /* our AP. */ .cfi_def_cfa_register 28 .cfi_offset 65, 16 .cfi_offset 31, -8 .cfi_offset 30, -16 .cfi_offset 29, -24 .cfi_offset 28, -32 stdux %r1, %r1, %r8 mr %r31, %r6 /* flags, */ mr %r30, %r5 /* rvalue, */ mr %r29, %r4 /* function address. */
/* Save toc pointer, not for the ffi_prep_args64 call, but for the later
bctrl function call. */
# if _CALL_ELF == 2
std %r2, 24(%r1)
# else
std %r2, 40(%r1)
# endif
/* Call ffi_prep_args64. */ mr %r4, %r1
# if defined _CALL_LINUX || _CALL_ELF == 2 # ifdef __PCREL__
bl ffi_prep_args64@notoc
# else
bl ffi_prep_args64 nop
# endif # else
bl .ffi_prep_args64 nop
# endif
# if _CALL_ELF == 2
mr %r12, %r29
# else
ld %r12, 0(%r29) ld %r2, 8(%r29)
# endif
/* Now do the call. */ /* Set up cr1 with bits 3-7 of the flags. */ mtcrf 0xc0, %r31 /* Get the address to call into CTR. */ mtctr %r12 /* Load all those argument registers. */ addi %r29, %r28, -32-(8*8) ld %r3, (0*8)(%r29) ld %r4, (1*8)(%r29) ld %r5, (2*8)(%r29) ld %r6, (3*8)(%r29) bf- 5, 1f ld %r7, (4*8)(%r29) ld %r8, (5*8)(%r29) ld %r9, (6*8)(%r29) ld %r10, (7*8)(%r29)
1:
/* Load all the FP registers. */ bf- 6, 2f addi %r29, %r29, -(14*8) lfd %f1, ( 1*8)(%r29) lfd %f2, ( 2*8)(%r29) lfd %f3, ( 3*8)(%r29) lfd %f4, ( 4*8)(%r29) lfd %f5, ( 5*8)(%r29) lfd %f6, ( 6*8)(%r29) lfd %f7, ( 7*8)(%r29) lfd %f8, ( 8*8)(%r29) lfd %f9, ( 9*8)(%r29) lfd %f10, (10*8)(%r29) lfd %f11, (11*8)(%r29) lfd %f12, (12*8)(%r29) lfd %f13, (13*8)(%r29)
2:
/* Load all the vector registers. */ bf- 3, 3f addi %r29, %r29, -16 lvx %v13, 0, %r29 addi %r29, %r29, -16 lvx %v12, 0, %r29 addi %r29, %r29, -16 lvx %v11, 0, %r29 addi %r29, %r29, -16 lvx %v10, 0, %r29 addi %r29, %r29, -16 lvx %v9, 0, %r29 addi %r29, %r29, -16 lvx %v8, 0, %r29 addi %r29, %r29, -16 lvx %v7, 0, %r29 addi %r29, %r29, -16 lvx %v6, 0, %r29 addi %r29, %r29, -16 lvx %v5, 0, %r29 addi %r29, %r29, -16 lvx %v4, 0, %r29 addi %r29, %r29, -16 lvx %v3, 0, %r29 addi %r29, %r29, -16 lvx %v2, 0, %r29
3:
/* Make the call. */ ld %r11, 8(%r28) bctrl /* This must follow the call immediately, the unwinder uses this to find out if r2 has been saved or not. */
# if _CALL_ELF == 2
ld %r2, 24(%r1)
# else
ld %r2, 40(%r1)
# endif
/* Now, deal with the return value. */ mtcrf 0x01, %r31 bt 31, .Lstruct_return_value bt 30, .Ldone_return_value bt 29, .Lfp_return_value bt 28, .Lvec_return_value std %r3, 0(%r30) /* Fall through... */
.Ldone_return_value:
/* Restore the registers we used and return. */ mr %r1, %r28 .cfi_def_cfa_register 1 ld %r0, 16(%r28) ld %r28, -32(%r28) mtlr %r0 ld %r29, -24(%r1) ld %r30, -16(%r1) ld %r31, -8(%r1) blr
.Lvec_return_value:
stvx %v2, 0, %r30 b .Ldone_return_value
.Lfp_return_value:
.cfi_def_cfa_register 28 mtcrf 0x02, %r31 /* cr6 */ bf 27, .Lfloat_return_value stfd %f1, 0(%r30) bf 26, .Ldone_return_value stfd %f2, 8(%r30) b .Ldone_return_value
.Lfloat_return_value:
stfs %f1, 0(%r30) b .Ldone_return_value
.Lstruct_return_value:
bf 29, .Lvec_homog_or_small_struct mtcrf 0x02, %r31 /* cr6 */ bf 27, .Lfloat_homog_return_value stfd %f1, 0(%r30) stfd %f2, 8(%r30) stfd %f3, 16(%r30) stfd %f4, 24(%r30) stfd %f5, 32(%r30) stfd %f6, 40(%r30) stfd %f7, 48(%r30) stfd %f8, 56(%r30) b .Ldone_return_value
.Lfloat_homog_return_value:
stfs %f1, 0(%r30) stfs %f2, 4(%r30) stfs %f3, 8(%r30) stfs %f4, 12(%r30) stfs %f5, 16(%r30) stfs %f6, 20(%r30) stfs %f7, 24(%r30) stfs %f8, 28(%r30) b .Ldone_return_value
.Lvec_homog_or_small_struct:
bf 28, .Lsmall_struct stvx %v2, 0, %r30 addi %r30, %r30, 16 stvx %v3, 0, %r30 addi %r30, %r30, 16 stvx %v4, 0, %r30 addi %r30, %r30, 16 stvx %v5, 0, %r30 addi %r30, %r30, 16 stvx %v6, 0, %r30 addi %r30, %r30, 16 stvx %v7, 0, %r30 addi %r30, %r30, 16 stvx %v8, 0, %r30 addi %r30, %r30, 16 stvx %v9, 0, %r30 b .Ldone_return_value
.Lsmall_struct:
std %r3, 0(%r30) std %r4, 8(%r30) b .Ldone_return_value .cfi_endproc
# if _CALL_ELF == 2
.size ffi_call_LINUX64,.-ffi_call_LINUX64
# else # ifdef _CALL_LINUX
.size ffi_call_LINUX64,.-.L.ffi_call_LINUX64
# else
.long 0 .byte 0,12,0,1,128,4,0,0 .size .ffi_call_LINUX64,.-.ffi_call_LINUX64
# endif # endif
endif
if (defined __ELF__ && defined __linux__) || _CALL_ELF == 2
.section .note.GNU-stack,"",@progbits
endif